A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5999-00-343-1757
NSN 5920-00-558-6792
NSN 5945-01-371-7592
NSN 5965-01-038-1904
NSN 5950-01-631-5299
NSN 6685-01-441-8361
NSN 5935-01-133-9607
NSN 6110-00-247-0211
NSN 6685-00-793-0650
NSN 6320-01-246-4390
NSN 6610-00-126-3021
NSN 6620-01-045-4467